The 6 V Zener diode is shown in figure has negligible resistance and a knee current of 5 mA. The minimum value of R (in Ω) so that the voltage across it does not fall below 6 V is

Question

The 6 V Zener diode is shown in figure has negligible resistance and a knee current of 5 mA. The minimum value of R (in Ω) so that the voltage across it does not fall below 6 V is (A) 40 (B) 60 (C) 72 (D) 80

Tardigrade Admin · Accepted Answer

In Zener diode, ⇒ (V max -VZ/R) ge I text knee +I2 ⇒ (10-6/50) ≥ 5 m +IR ⇒ IR ≤ 80 m -5 m ∵ IR max =75 mA and IR min =80 mA

Q. The $6 V$ Zener diode is shown in figure has negligible resistance and a knee current of $5 m A$ . The minimum value of R (in $Ω$ ) so that the voltage across it does not fall below 6 V is

40

60

72

80

120

In Zener diode,
$\Rightarrow \frac{V _{m a x} - V _{Z}}{R} \geq I_{knee} + I_{2}$
$\Rightarrow \frac{10 - 6}{50} \geq 5 m + I_{R}$
$\Rightarrow I_{R} \leq 80 m - 5 m$
$∵ I_{R_{m a x}} = 75 m A$ and $I_{R_{m i n}} = 80 m A$

Q. The 6V Zener diode is shown in figure has negligible resistance and a knee current of 5mA. The minimum value of R (in Ω) so that the voltage across it does not fall below 6 V is

40

60

72

80

120

In Zener diode, ⇒RVmax​−VZ​​≥Iknee ​+I2​ ⇒5010−6​≥5m+IR​ ⇒IR​≤80m−5m ∵IRmax​​=75mA and IRmin​​=80mA

Q. The $6 V$ Zener diode is shown in figure has negligible resistance and a knee current of $5 m A$ . The minimum value of R (in $Ω$ ) so that the voltage across it does not fall below 6 V is

In Zener diode,
$\Rightarrow \frac{V _{m a x} - V _{Z}}{R} \geq I_{knee} + I_{2}$
$\Rightarrow \frac{10 - 6}{50} \geq 5 m + I_{R}$
$\Rightarrow I_{R} \leq 80 m - 5 m$
$∵ I_{R_{m a x}} = 75 m A$ and $I_{R_{m i n}} = 80 m A$